Re: Gtk::TreeView

[Christopher Raine <c raine gmx net>]

Vladimir,

I just compiled and tested both programs that Paul sent  without  
problems.

The _BLOCK_TYPE_IS_VALID(pHead->nBlockUse) assertion can get fired  
for several reasons. Either memory is getting freed twice, heap/stack  
corruption has occured or two(or more) different types of the win32  
runtime libraries are been used. In the last case you are not allowed  
to free memory in a dll/exe that has been allocated in another dll/ 
exe if you are not using the DLL versions of the runtime libraries.  
Are you linking against the Multithreaded-DLL-Debug version of the  
runtime libraries?

regards,
Christopher Raine


On Dec 18, 2006, at 10:39 PM, Vladimir Đokić wrote:

> Hi all,
>
> Just ran your code Paul (just test.cc), and still the same error  
> when deleting mWindow (_BLOCK_TYPE_IS_VALID(pHead->nBlockUse);).
>
>
> Thank you for all your help,
>
> Vladimir.
>
>
>
> On 12/18/06, Paul Davis <pjdavis engineering uiowa edu> wrote:  
> Vladimir,
>
> I've attached two files. They're both essentially the same thing that
> you pasted, but changed a bit to make them compile without the rest of
> your code.
>
> Try compiling and running them and let me know if they produce the
> errors you're getting with your code.
>
> better.cc is the same program implemented slightly differently using
> stack allocation and inheritance. Both being 'Good Things (TM)' in
> this case.
>
> Paul
>
> On 12/18/06, Vladimir Đokić <v djokic gmail com> wrote:
> > Hi all,
> >
> > Here's the code snip (from various files):
> >
> > int main(int argc, char* argv[])
> > {
> >     Gtk::Main kit(argc, argv);
> >
> >     u1::Editor* editor = new u1::Editor();
> >     editor->Init();
> >
> >     Gtk::Main::run(editor->GetWindow());
> >
> >     delete editor;
> >
> >     return 0;
> > }
> >
> > class Editor
> > {
> > public:
> >     Editor()
> >         : mWindow(NULL)
> >     { /* void */ }
> >
> >     ~Editor()
> >     { delete mWindow; }
> >
> >      void Init()
> >     {
> >        ...
> >
> >         Glib::RefPtr<Gnome::Glade::Xml> xml =
> > Gnome::Glade::Xml::create("Ui/u1Editor.glade");
> >         xml->get_widget("u1Window", mWindow);
> >
> >         ...
> >         Gtk::TreeView* tree_view = NULL;
> >         xml->get_widget("u1TreeView", tree_view);
> >
> >         mTreeModel = Gtk::TreeStore::create(mTreeColumns);
> >         tree_view->set_model(mTreeModel);
> >
> >         Gtk::TreeModel::Row row = *(mTreeModel->append());
> >         row[mTreeColumns.mNodeName] = "Root";
> >
> >         tree_view.append_column("Nodes",
> > mTreeColumns.mNodeName );
> >     }
> >
> > private:
> >     void OnQuit() // <-- executed from menu bar
> >     {
> >         Gtk::Main::quit();
> >     }
> >
> >     class TreeColumns : public Gtk::TreeModel::ColumnRecord
> >     {
> >      public:
> >
> >     ModelColumns()
> >     { add(mNodeName); }
> >
> >         Gtk::TreeModelColumn<Glib::ustring> mNodeName;
> >     };
> >
> >     TreeColumn mTreeColumns;
> >     Glib::RefPtr<Gtk::TreeStore> mTreeModel;
> >
> >     Gtk::Window*   mWindow;
> >
> > };
> >
> >
> >
> > Hope this will make more sense,
> >
> > Vladimir.
> >
> >
> > On 12/18/06, Vladimir Đokić <v djokic gmail com > wrote:
> > > Hi all,
> > >
> > > Unfortunately, since I'm using binary distribution of gtkmm,  
> I'm unable to
> > step into destruction of Gtk::Window. I've just noticed that I'm  
> using
> > Multithreaded Debug DLL (and don't know how gtkmm on windows was  
> built), so
> > I'll try changing these values... I'll post code later, when I  
> get home
> > (thought the code follows documentation and examples).
> > >
> > >
> > >
> > > Thanks,
> > >
> > > Vladimir.
> > >
> > >
> > > On 12/18/06, Paul Davis < pjdavis engineering uiowa edu> wrote:
> > > > Vladimir,
> > > >
> > > > Could you paste the tree view code you're using.
> > > >
> > > > And what is the heap message?  I don't know much about Visual  
> Studio,
> > > > so if this is some standard error I can only assume its the  
> equivalent
> > > > of a segfault.
> > > >
> > > > Does Visual Studio have a debugger so you can see which line is
> > > > causing this error?
> > > >
> > > > Paul
> > > >
> > > > On 12/18/06, Vladimir Đokić < v djokic gmail com> wrote:
> > > > > Hi all,
> > > > >
> > > > > I'm loading everything but the treemodel from the .glade  
> file using
> > > > > libglademm. For the creation of model and model data  
> columns I'm using
> > > > > example code from the gtkmm book. The window pointer I'm  
> getting is
> > valid
> > > > > (points to Gtk::Window data) as well as the treeview  
> pointer (but I'm
> > only
> > > > > deleting window, since all other widgets are managed and  
> will be
> > deleted as
> > > > > children of window). I also noticed that nodes are showing  
> some bad
> > > > > behavior: Only last node is shown as root (top), and the  
> when I click
> > to
> > > > > expand the node, nothing shows (empty). The binaries of  
> gtkmm are from
> > > > > http://www.pcpm.ucl.ac.be/~gustin/win32_ports/. I've
> > double
> > > > > checked the code. When the deletion of window occurs the  
> heap error
> > message
> > > > > is issued by the visual studio. In the end, I can cook up  
> small
> > example of
> > > > > this - if needed.
> > > > >
> > > > > Thanks,
> > > > >
> > > > > Vladimir.
> > > > >
> > > > > On 12/18/06, Paul Davis < pjdavis engineering uiowa edu>  
> wrote:
> > > > > > Vladimir,
> > > > > >
> > > > > > Could you be a tad bit more specific on the problem  
> you're having?
> > > > > >
> > > > > > Paul
> > > > > >
> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > >
> > > > > --
> > > > >
> > > > > "There's no room for ideals in this mechanical place. There  
> has to be
> > > > > passion. "
> > > > > _______________________________________________
> > > > > gtkmm-list mailing list
> > > > > gtkmm-list gnome org
> > > > > http://mail.gnome.org/mailman/listinfo/gtkmm-list
> > > > >
> > > > >
> > > > >
> > > >
> > >
> > >
> > >
> > > --
> > >
> > > "There's no room for ideals in this mechanical place. There has  
> to be
> > passion. "
> >
> >
> >
> > --
> >
> > "There's no room for ideals in this mechanical place. There has  
> to be
> > passion. "
> > _______________________________________________
> > gtkmm-list mailing list
> > gtkmm-list gnome org
> > http://mail.gnome.org/mailman/listinfo/gtkmm-list
> >
> >
> >
>
>
>
>
> --
> "There's no room for ideals in this mechanical place. There has to  
> be passion. "
> _______________________________________________
> gtkmm-list mailing list
> gtkmm-list gnome org
> http://mail.gnome.org/mailman/listinfo/gtkmm-list